Compaq ProLiant 8500 ProLiant 8500 Server Technology
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- Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 1
chipset codeveloped by Compaq, Intel, and Corollary, as well as Intel's Pentium III Xeon processors. In addition, new disk drive technology and a new integrated array controller optimize the ProLiant 8500 server's internal storage for operating system and boot support while allowing maximum - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 2
trademark and Xeon is a trademark of Intel Corporation. Other product names mentioned herein may be trademarks and/or registered trademarks of their respective companies. ©2000 Compaq Computer Corporation. All rights reserved. Printed in the U.S.A. Compaq ProLiant 8500 Server Technology Second - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 3
modular design and System Interconnect Status Indicators improve serviceability and further reduce downtime associated with upgrades and field maintenance. This technology brief explains the features of the ProLiant 8500 server and describes the management and storage technologies that enhance - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 4
ProLiant 8500 server. The essential features of the architecture include: • Profusion five-point crossbar switch • Dual 100-MHz processor buses • Dual 100-MHz memory buses, each with its own memory controller • Dedicated 100-MHz I/O bus • Support for up to eight Pentium III Xeon processors • Support - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 5
later. The Profusion crossbar switch consists of two physical chips-the memory address controller (MAC) and the data interface buffer (DIB). This functional partitioning of the application-specific integrated circuit (ASIC), as shown in Figure 3, improves system performance. For every transaction - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 6
ProLiant 8500 server to support up to eight Pentium III Xeon processors. The Profusion chipset joins the two processor buses, the I/O bus, and the two memory ports. The otherwise independent processor and I/O buses are joined by a logical connection that is made only when required to transfer data - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 7
support will not be available for an extended period. Also, in discussions with customers, Compaq learned that very few server implementations are fully configured with memory. With this in mind, Compaq used the internal server space to provide additional drive capacity in the ProLiant 8500 server - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 8
Compaq 8-way architecture will support up to four Compaq host-to-PCI bridges. However, by incorporating only three host-to-PCI bridges, the ProLiant 8500 server supporting multiple clock speeds. Multiple Prefetch Buffers The Compaq the delayed transaction support, the bridge can get data for multiple - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 9
, which was pioneered by Compaq. PCI Hot Plug technology provides the ability to remove, replace, upgrade, and add PCI adapters without shutting down the server. Any PCI adapter can be placed in a PCI Hot Plug slot; however, PCI Hot Plug device drivers and OS support are required to enable PCI - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 10
difference between the Pentium II Xeon and Pentium III Xeon processors is the migration to the Katmai core logic. The Katmai core logic adds the following enhancements to the existing Intel core: • Memory streaming • Concurrent Single Instruction Multiple Data - Floating Point (SIMD-FP) • Katmai - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 11
cooling issues that may arise from packing so much power into such a small form factor, Compaq also improved the design of the ProLiant 8500 chassis. As show in Figure 6, a spring-loaded trap door has been added to each power supply bay. When a power supply is removed, the trap door will close to - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 12
added, or upgraded. PCI Hot Plug Technology The Compaq ProLiant 8500 server incorporates industry-standard PCI Hot Plug technology. This technology, pioneered by Compaq, adds hot-plug capabilities to existing PCI adapters for increased system availability and serviceability. Compaq led the industry - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 13
Technology Compaq's redundant Netelligent NIC technology allows two similar NICs to share a single instance of device driver user can have continuous service and the administrator can greatly reduce planned and unplanned downtime. The ProLiant 8500 server supports a Compaq NC3131 Fast Ethernet - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 14
in the ProLiant 8500 server has its own redundant PPM. PPMs are also known as voltage regulator modules. An additional PPM is included in the server to power the system board. The PPMs deliver the precise voltage required by the processors. Compaq PPMs are programmable and support all current - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 15
BRIEF (cont.) ... Redundant Hot-Plug Power Supplies The ProLiant 8500 server uses one of the newest Compaq technologies to reduce downtime: intelligent, redundant, hot-plug power supplies. The server supports two dual-rated 1150-watt/500-watt power supplies with new handles for easier insertion and - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 16
implement support for the power-down control in the future. Power Backplane Power Supply DC AC/DC AC Converter System Board OS I2C Bus Microcontroller Power Switch ACPI Controller Figure 10: Power supply schematic. Power On Soft Power Down Load Balancing The power supplies automatically - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 17
health drivers of changes in load. Compaq hot-plug power supplies are readily identifiable by their portcolored bezel, as shown in Figure 11. Port-colored bezel Figure 11: Front view of hot-plug power supply with port-colored bezel. Hot-Plug Hard Disk Drives The ProLiant 8500 server supports four - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 18
out-of-the box RAID capability with maximum transfer rates of 80 MB/s, allowing optimum OS and boot support. Configuration Utilities The Option ROM Configuration for Arrays Utility is firmware that comes with the integrated controller in the ProLiant 8500 server. This firmware allows users to set - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 19
data on the drives. MANAGEMENT TECHNOLOGIES Fault-tolerant, redundant features are only part of what makes Compaq servers highly available. Compaq offers a range of hardware- and software-based server management tools that can be used to reduce downtime and increase productivity. The ProLiant 8500 - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 20
by the boot block, the system will automatically launch the redundant image and continue the POST process. If the redundant ROM is launched, the user will see an error message identifying the faulty system ROM. Auto-Default ROM Configuration When a ProLiant 8500 server is first powered on, the - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 21
configurations, the system will boot normally. The OS selection power line supplies power to the IMD whenever the server power line is plugged in. Even if the server power goes down, the auxiliary line continues to power IRC consists of a Compaq designed ASIC and associated firmware. IRC allows out - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 22
design eases serviceability and future upgrades, since a module can be removed and replaced with little effort. I/O Module Processor & Memory Module Connection Connection Connection Connection Power Supplies System Midplane Media Module Figure 13: Modularity in the ProLiant 8500 server. The - Compaq ProLiant 8500 | ProLiant 8500 Server Technology - Page 23
causing the problem. System Interconnect Status Indicators Figure 15: System Interconnect Status Indicators in the ProLiant 8500 server. CONCLUSION The Compaq ProLiant 8500 server offers customers a high-performance, highly scalable solution for their data center needs. The server also provides
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T
ECHNOLOGY
B
RIEF
1
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June 2000
Compaq Computer
Corporation
ISSD Technology
Communications
C
ONTENTS
Introduction
........................
3
High-Performance
Technologies
......................
3
ProLiant
8500 Architecture
.......
4
Pentium III Xeon
Processor Technology
............
10
High-Availability
Technologies
....................
12
PCI Hot Plug Technology
.......
12
Redundant Network Interface
Controller Technology
............
13
Redundant Hot-Plug Fans
......
13
Redundant Processor
Power Modules
......................
14
Redundant Hot-Plug
Power Supplies
.....................
15
Hot-Plug Hard Disk Drives
......
17
Auto Processor
Bus Recovery
........................
17
Storage
Technologies
....................
17
Hard Drive Technology
...........
17
Integrated Array
Controller Technology
............
18
Management
Technologies
....................
19
Remote-Flash
Redundant ROM
....................
20
Auto-Default ROM
Configuration
.........................
20
Integrated Management
Display
..................................
21
Integrated Remote Console
....
21
Remote Insight
Board/PCI Option
..................
21
Serviceability
Features
............................
22
Conclusion
........................
23
Compaq ProLiant
8500 Server Technology
This technology brief describes the high-performance, high-availability, storage, and
management technologies built into the
Compaq ProLiant
8500 server.
The high-
performance technologies include a new 8-way system architecture driven by the
Profusion chipset codeveloped by Compaq, Intel, and Corollary, as well as Intel’s
Pentium III Xeon processors.
In addition, new disk drive technology and a new
integrated array controller optimize the
ProLiant
8500 server’s internal storage for
operating system and boot support while allowing maximum external storage capacity.
The high-availability technologies include PCI Hot Plug technology; redundant hot-plug
power supplies, drives, and fans; redundant processor power modules; and auto
processor bus recovery.
The
ProLiant
8500 server uses a highly modular design that
allows easy access to components, thus reducing downtime for service and upgrades.
The
ProLiant
8500 server also incorporates key management technologies, such as the
Integrated Remote Console, Integrated Management Display, Remote-flash Redundant
ROM, and auto-default ROM configuration, that further enhance availability.
The intended audience for this paper is engineers and system administrators familiar
with existing Compaq technology and servers.
For those less familiar with Compaq
technology, please see the related technology briefs referenced in this document.
For
more information about the
ProLiant
8500 server, see the complete list of features at
.
Please direct comments regarding this communication to the ISSD Technology Communications Group at this Internet
address: